NSW ICAC's biggest inquiry into activities of former ALP ministers wraps up after six months

Eddie Obeid is fighting any moves to expel him from the Labor party before the ICAC delivers its findings.

AAP: Paul Miller

A corruption inquiry into former New South Wales Labor ministers has wrapped up after six months of evidence and hundreds of witnesses.

In the biggest inquiry of its kind in New South Wales ICAC Commissioner David Ipp has investigated two mining licences issued by former minister Ian Macdonald and allegations that Eric Roozendal received a discounted car as a bribe.

Former minister Eddie Obeid, who is accused of benefiting from inside knowledge about the Mount Penny mine licence, last week said Ian Macdonald has never been in his parliamentary office in 20 years in politics.

But on the last day of the inquiry former Labor MP Ian West said the suggestion is like Sir Donald Bradman saying he has never been in the Australian cricket teams dressing room.

Former MP Paul O'Grady said when he read reports of the testimony he thought it was a subeditors mistake.

Mr O'Grady said Mr Obeid has 'more front than Mark Foy's' and 'more hide than Jessie' for making the allegation.

Current Labor MP Lynda Voltz also disputed Mr Obeid's claim.

After hearing the three witnesses, Mr Obeid's barrister Stuart Littlemore said his client did not want to contradict the claims.

He told the inquiry Mr Obeid may have 'been mistaken' with his recollection of events.

Ian Macdonald has denied rigging the Mount Penny tender process and Eddie Obeid has denied having inside knowledge of it.

The commissioner will hand down his findings into four ICAC inquiries into the activities of former NSW Labor ministers in July.

Obeid threatens legal action against Labor

The New South Wales Opposition Leader John Robertson says he stands by his calls for Labor to expel controversial figure Eddie Obeid, despite the former powerbroker's threats to sue the party.

Mr Robertson asked the party to expel Mr Obeid and his former colleague Ian Macdonald in March, after the ICAC heard dramatic allegations of corruption against them.

Both men have publicly declared they are innocent and the ALP has received a letter from Mr Obeid's lawyer saying his expulsion is premature.

He is threatening legal action if any steps are taken to strip him of membership before the ICAC delivers its findings.

Mr Robertson says his position on Mr Obeid has not changed.

"I have asked for that expulsion to occur, I don't resile from that position," he said.

"I've made it clear I'm not going to tolerate behaviour like that in the Labor party. In the end Mr Obeid may exercise legal right that he thinks he's got but in the end I don't resile from the stance I've taken."